+ mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5
has been added to the -mm tree.  Its filename is
     mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5.patch

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------------------------------------------------------
From: Waiman Long <longman@redhat.com>
Subject: mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5

It turns out that the previous patch doesn't work if CONFIG_ZONE_DMA isn't
defined.

Link: https://lkml.kernel.org/r/20210512145107.6208-1-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/slab.h |   11 ++++++-----
 mm/internal.h        |    5 -----
 mm/memcontrol.c      |    2 +-
 mm/slab_common.c     |    9 ++-------
 4 files changed, 9 insertions(+), 18 deletions(-)

--- a/include/linux/slab.h~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5
+++ a/include/linux/slab.h
@@ -312,16 +312,17 @@ static inline void __check_heap_object(c
  */
 enum kmalloc_cache_type {
 	KMALLOC_NORMAL = 0,
-#ifdef CONFIG_MEMCG_KMEM
-	KMALLOC_CGROUP,
-#else
+#ifndef CONFIG_ZONE_DMA
+	KMALLOC_DMA = KMALLOC_NORMAL,
+#endif
+#ifndef CONFIG_MEMCG_KMEM
 	KMALLOC_CGROUP = KMALLOC_NORMAL,
+#else
+	KMALLOC_CGROUP,
 #endif
 	KMALLOC_RECLAIM,
 #ifdef CONFIG_ZONE_DMA
 	KMALLOC_DMA,
-#else
-	KMALLOC_DMA = KMALLOC_NORMAL,
 #endif
 	NR_KMALLOC_TYPES
 };
--- a/mm/internal.h~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5
+++ a/mm/internal.h
@@ -116,11 +116,6 @@ extern void putback_lru_page(struct page
 extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address);
 
 /*
- * in mm/memcontrol.c:
- */
-extern bool cgroup_memory_nokmem;
-
-/*
  * in mm/page_alloc.c
  */
 
--- a/mm/memcontrol.c~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5
+++ a/mm/memcontrol.c
@@ -83,7 +83,7 @@ DEFINE_PER_CPU(struct mem_cgroup *, int_
 static bool cgroup_memory_nosocket;
 
 /* Kernel memory accounting disabled? */
-bool cgroup_memory_nokmem;
+static bool cgroup_memory_nokmem;
 
 /* Whether the swap controller is active */
 #ifdef CONFIG_MEMCG_SWAP
--- a/mm/slab_common.c~mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5
+++ a/mm/slab_common.c
@@ -841,15 +841,10 @@ void __init setup_kmalloc_cache_index_ta
 static void __init
 new_kmalloc_cache(int idx, enum kmalloc_cache_type type, slab_flags_t flags)
 {
-	if (type == KMALLOC_RECLAIM) {
+	if (type == KMALLOC_RECLAIM)
 		flags |= SLAB_RECLAIM_ACCOUNT;
-	} else if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_CGROUP)) {
-		if (cgroup_memory_nokmem) {
-			kmalloc_caches[type][idx] = kmalloc_caches[KMALLOC_NORMAL][idx];
-			return;
-		}
+	else if (IS_ENABLED(CONFIG_MEMCG_KMEM) && (type == KMALLOC_CGROUP))
 		flags |= SLAB_ACCOUNT;
-	}
 
 	kmalloc_caches[type][idx] = create_kmalloc_cache(
 					kmalloc_info[idx].name[type],
_

Patches currently in -mm which might be from longman@redhat.com are

mm-memcg-move-mod_objcg_state-to-memcontrolc.patch
mm-memcg-cache-vmstat-data-in-percpu-memcg_stock_pcp.patch
mm-memcg-improve-refill_obj_stock-performance.patch
mm-memcg-optimize-user-context-object-stock-access.patch
mm-memcg-slab-properly-set-up-gfp-flags-for-objcg-pointer-array.patch
mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches.patch
mm-memcg-slab-create-a-new-set-of-kmalloc-cg-n-caches-v5.patch
mm-memcg-slab-disable-cache-merging-for-kmalloc_normal-caches.patch